Jean bought an mp3 player and a calculator for a total of $208. the mp3 player cost $140 more than the calculator, what did the calculator cost

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).

What is the total surface area of this square pyramid?

*segment an is an altitude of right ? abc with a right angle at a. if ab = 2root 5 in and nc = 1 in, find bn, an, ac.